Nested repeaters - accessing a control inside the parent repeater from the child repeater

I have a page where I list several hotels, and for each hotel I list the prices for each date that the user selected.

My HTML looks like this:

<table>
<asp:Repeater ID="rptrHotels" runat="server">
    <ItemTemplate>
        <tr><td><%# Eval("HotelName") %></td></tr>
        <tr>
            <asp:Repeater ID="rptrHotelRates" runat="server" DataSource='<%# GetHotelRates(Container.DataItem) %>'>
                <ItemTemplate>
                    <td>
                        <span class="date"><%# Eval("Date") %></span>
                        <span class="price">$<%# Eval("Price") %></span>
                    </td>
                </ItemTemplate>
            </asp:Repeater>
            <td>
                <span class="date">Total</span>
                <span class="price">$<asp:Literal ID="litTotal" runat="server" /></span>
            </开发者_StackOverflowtd>
        </tr>                   
    </ItemTemplate>
</asp:Repeater>
</table>

And my code-behind:

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        DateTime startDate = Request.QueryString["StartDate"];
        DateTime endDate = Request.QueryString["EndDate"];

        List<Hotel> hotels = GetHotels(startDate, endDate);
        rptrHotels.DataSource = hotels;
        rptrHotels.DataBind();
    }
}


protected List<Rate> GetHotelRates(object item)
{
    DateTime startDate = Request.QueryString["StartDate"];
    DateTime endDate = Request.QueryString["EndDate"];
    Hotel hotel = (Hotel)item;

    List<Rate> rates = GetRates(hotel, startDate, endDate);

    decimal total = (from r in rates
                     select r.Price).Sum();

    return rates;
}

In my GetHotelRates() function, I'm getting the total price by summing up all the rate prices. But I need to somehow put that value in litTotal, which is outside the child repeater, but inside the parent repeater.

How can I do that?

In your item binding event do something like this:

((Literal)((Repeater)sender).Parent.FindControl("litTotal")).Text;

You might need to do another cast on the parent to get it to a Repeater, but I'm not sure.

You could always try some NamingContainer.Parent.Parent....FindControl (exaggerated) magic, but a cleaner way to do it would be to just create a separate method to get your total:

protected decimal GetHotelTotal(object item)
{
    Hotel hotel = (Hotel)item;

    List<Rate> rates = GetRates(hotel, startDate, endDate);

    decimal total = (from r in rates
                 select r.Price).Sum();
    return total;
}

And call this in your Literal:

<asp:Literal ID="litTotal" runat="server" Text="<%# GetHotelTotal(Container.DataItem) %>" />